Acute mastitis is an acute suppurative infection, which can be divided into three stages according to its cause and pathological process: acute inflammatory stage, abscess formation stage, and ulceration stage. Corresponding treatments are applied at each stage. During the acute inflammatory phase, antibiotics such as penicillin should be used to control the progression of inflammation. Once an abscess forms, the main measure is to incise and drain pus in a timely manner, while also taking medicine to clear heat and detoxify. In the ulceration stage, proactive dressing changes and wound cleaning are necessary, along with internal use of heat-clearing and detoxifying medications, and decoctions that promote pus drainage. In principle, breastfeeding should be temporarily halted, and a breast pump should be used regularly to extract milk, ensuring smooth milk flow and preventing stasis. Additionally, wearing a supportive bra can help lift the breasts, and moist heat should be applied to the affected area for 20 to 30 minutes, three to four times a day. Afterwards, the nipples should be cleaned with diluted saltwater. (The use of medications should be conducted under the guidance of a doctor.)